Amie Williams Associate Online Editor
December 4, 2013

Ford enthusiasts across the world have been anxiously anticipating this very moment – the unveiling of the 2015 Ford Mustang. With a sleek new design and brand-new platform dubbed the S550, the new Mustang is here and ready to throw down.

Whether fastback or convertible, three engine options are available for the new Mustang with an automatic or a standard six-speed manual transmission.

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With all of the EcoBoost hype, it was rumored that this new fuel-efficient powertrain was in the works for the new 2015 Ford Mustang. The answer is yes, the EcoBoost is an option on the 2015 Ford Mustang – a turbocharged 2.3L capable of 305hp and lb-ft of torque. Named best in class, the EcoBoost delivers outstanding performance and has been chosen to represent the new Mustang.

“This EcoBoost engine delivers the healthy output that Mustang drivers expect regardless of the speed,” said Scott Makowksi, EcoBoost powertrain engineering manager. “This EcoBoost engine might be small in displacement, but it delivers where a Mustang driver expects it with a broad, flat torque curve and great driveability under any conditions.”

Why not add EcoBoost to the lineup? Great on fuel economy, it features twin independent variable camshaft timing paired with a turbo to produce big power and torque. With a low-inertia twin-scroll turbocharger and a much quicker boost response, the S550 Ford Mustang will provide that big power and torque with lower emissions.

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The twin-scroll turbo separates the exhaust pulses from the next cylinder, maximizing pulse energy to the turbine wheel by getting rid of mixing losses. That means delivering quicker torque to the driver and is similar performance to a twin-turbo setup. Separated exhaust ports allow the exhaust valves to remain open for longer for reduced pumping losses with a near 1 percent increase to specific fuel consumption.

Durability was a priority with such a small engine capable of running with the big dogs. The EcoBoost features enhancements to eliminate stress with a forged-steel crankshaft, piston-cooling jets, steel piston ring carriers, premium bearing materials, upgraded valve seat materials, forged-steel connecting rods, high-pressure die-cast aluminum cylinder block with ladder-frame bearing caps, deep-sump and a die-cast aluminum oil pan.

The 2015 Ford Mustang wouldn’t be American muscle if it didn’t come with the almighty 5.0L V-8 engine. The Coyote V-8 comes with plenty of upgrades especially when getting on that open throttle. These changes came to life from development of the special edition Boss 302.

Upgrades for the V-8 engine include larger intake valves, larger exhaust valves, revised intake camshafts, revised exhaust camshafts, stiffer valve springs, new cylinder-head casting, sinter forged connecting rods, redesigned piston tops, and rebalanced forged crankshaft. The end result generates 420 horsepower and 396 lb-ft of torque.

The new intake manifold features charge motion control valves to partially close off the port flow when maintaining lower engine speeds. Air charge tumble and swirl increases improved air-fuel mixing by better fuel economy, idle stability, and lower emissions.

Variable camshaft timing on the intake includes a larger range of adjustment available from mid-lock phasers. This ensures optimal valve-timing over a broader range of engine speeds as well as better fuel economy and emissions.

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Transmission includes a Getrag manual with new shift linkage designed for short throws and better precision. With the shift lever now positioned closer to the driver, it makes a clearer shifting path away from the cup holders.

The steering wheel features optional paddle shifters for the daily driving, but giving the driver control on those fun twisty roads. Rev-matching downshifts come standard when opting for the Select-Shift six-speed automatic transmission.

Weight was dropped from the automatic transmission with a freshly-redesigned case with cast-in-ribs, which also adds stiffness. Clutches have been improved internally with operating temperature increased to lower friction. Output shaft is now supported by a ball-bearing allowing the new Mustang GT to reach 155mph.

Last but not least, the four-valve 3.7L V-6 engine will also be in the Mustang lineup and is expected to generate 300hp and 270 lb-ft of torque.

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Suspension has been a big topic with the new Mustang after spy shots surfaced showing the Mustang with an independent rear suspension. Yes, the ’15 Mustang features integral-link independent rear suspension with coil springs, solid stabilizer bar, and twin- or mono- tube dampers. The front suspension is double-ball joint, independent MacPherson strut and tubular stabilizer bar setup.

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Stopping power for the 3.7L V-6 features four-wheel power disc brakes with four-wheel sensor, four-channel and anti-locking braking system with AdvanceTrac electronic stability. The same goes for the 2.3L EcoBoost and 5.0L, but with added stability control.


The new Mustang’s body utilizes welded steel with an aluminum hood and front fenders. Wheel options are 17x7.5-inches for the V-6 and EcoBoost, with 18x8.0 wheels standard on the 5.0L GT.